| Answer | Crossword Clue |
|---|---|
| ACID | Litmus paper reddener |
| ACID | Litmus-paper reddener |
| ACID | Litmus reddener |
| BLUE | Litmus-paper color |
| ACID | Litmus-paper reactant |
| ACIDTEST | Litmus-paper ritual |
| TEST | Use litmus paper |
| TESTS | Uses litmus paper |
| REAGENT | Litmus paper, for one |
| ACID | It reddens litmus paper |
| TEST | Use for litmus paper |
| ACID | It turns litmus paper red |
| REAGENTS | Litmus paper chemicals, e.g. |
| ACIDS | They turn litmus paper red |
| BASE | It turns litmus paper blue |
| ALKALI | It turns litmus paper blue |
| REAGENTS | Litmus paper and methylene blue |
| ALKALI | It turns red litmus paper blue |
